body {
    background: url(../asset/bg1.png) no-repeat center;
  }
  
  .user-form {
    border-radius: 15px;
    padding: 30px 80px;
    font-size: 14px;
    color: #fff;
    letter-spacing: 3px;
    background: rgba(0, 0, 0, 0.2);
  }
  .user-form a {
    text-decoration: underline;
  }
  
  .title {
    font-size: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 50px auto;
  }
  .title img {
    height: 50px;
    margin-right: 20px;
  }
  
  .form-group {
    height: 80px;
    padding-bottom: 30px;
    position: relative;
  }
  .form-group .txt {
    width: 100%;
    height: 100%;
    border: 1px solid #fff;
    background: transparent;
    color: #fff;
    font-size: 16px;
    letter-spacing: 3px;
    outline: none;
    border-radius: 25px;
    padding-right: 20px;
    padding-left: 55px;
  }
  .form-group .txt::placeholder {
    color: #ccc;
  }
  .form-group .iconfont {
    position: absolute;
    left: 20px;
    font-size: 24px;
    color: #ccc;
    top: 13px;
  }
  .form-group .err {
    position: absolute;
    left: 20px;
    bottom: 8px;
    color: #ff8e03;
  }
  .form-group .submit {
    width: 100%;
    height: 100%;
    font-size: 20px;
    letter-spacing: 10px;
    border-radius: 25px;
    outline: none;
    border: none;
    cursor: pointer;
    color: rgba(0, 0, 0, 0.7);
    background: #ffda43;
    transition: 0.2s;
  }
  .form-group .submit:hover {
    background: #ffe57b;
  }
  .form-group .submit:active {
    background: #d4b534;
  }
  .form-group .msg {
    text-align: center;
  }